The uPC78M12H is a 12V, 0.5A positive voltage regulator manufactured by NEC (now Renesas Electronics). This regulator is designed to provide a stable and regulated 12V output voltage from a higher input voltage, making it suitable for a variety of electronic applications.

Applications

• Power Supplies: Used in power supplies to provide a stable 12V output.
• Voltage Regulation: Employed in circuits requiring a regulated 12V supply.
• Battery Chargers: Integrated into battery chargers to regulate the charging voltage.
• Microcontroller Power: Provides a stable power supply for microcontrollers and other digital devices.
• Instrumentation: Used in test and measurement equipment to ensure accurate and stable operation.

Features

• Fixed 12V Output: Provides a stable and accurate 12V output voltage.
• 0.5A Output Current: Capable of delivering up to 0.5A of output current.
• Internal Thermal Overload Protection: Protects the regulator from overheating.
• Short-Circuit Protection: Protects the regulator from damage due to short circuits.
• Safe Operating Area (SOA) Protection: Prevents the regulator from exceeding its safe operating limits.
• Low Dropout Voltage: Operates with a low input-output voltage differential.

Benefits

• Stable Output Voltage: Provides a stable and regulated 12V output for reliable operation.
• Overload Protection: Protects the regulator from damage due to thermal overload and short circuits.
• Easy to Use: Simple and easy to integrate into various applications.
• Cost-Effective Solution: Provides a cost-effective solution for voltage regulation.
• Reliable Operation: Designed for reliable performance in demanding applications.
• Wide Input Voltage Range: Operates over a wide range of input voltages.

Additional Details

The uPC78M12H requires a minimum input voltage that is slightly higher than the 12V output voltage to maintain regulation. It features built-in thermal overload protection, which shuts down the regulator if the junction temperature exceeds a certain limit, preventing damage to the device. The short-circuit protection limits the output current to prevent damage during short-circuit conditions. The regulator is typically packaged in a TO-220 package, which allows for easy mounting and heat sinking. Key specifications include the input voltage range, output voltage accuracy, and operating temperature range. Renesas Electronics continues to support this part and similar voltage regulators, ensuring their availability for various applications. This regulator is an ideal choice for providing a reliable and stable 12V power supply in a wide range of electronic devices.